Sliding-door lock.



Patented `my 3|, |900.

A. CRAMND.

SLIDING D003 LUCK.

(Application led Aug. 80, 1899.)

A (No Modal.)

/C' @el l .gela/;

@do l 3 Sheets-Sheet l,

HIM

d5 il .nn 1. j Y

JQ, N

No. s54i6u-9 Parelntedfluly 3|,'19oo.

\ `mcmmomn.-

SLIDING DUUR LUCK.

(Application led Aug. 30, 1899A (N0 Model!) 3 Sherets-Shet 2..

No. 654,609. Patented luly 3|, 1900. A.V0RAM0ND.

sLmlNG` unan Lock.

(Applicatiun filed Aug. 30, 1899.)

(No Model.)

3 Sheets-Sheet 3 niTE TATES" PATENT Erice.

AALEXANDER oeAMO-ungor LYONS, IOWA, ASSIGNOR To THE NITED STATES STEEL Look COMPANY, OE SAME PLACE.

SEEcTEcATION forming para of 'Letter-s raten@ No. e54,eoe,datd Jury 31, 1900.

. Aspiration inea August so, 1899. Serin No. 728,966. (Numan.)

To all whom it' may concern:

Be it known that I, ALEXANDER CEAMOND,

l a citizen ofthe United States, residing at Ly-` lIi ons,inthe county of Clinton and State of Iowa, have invented certain new and useful Improvements in Sliding-DoorLocks; and I do hereby declare-the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates especially to the class of locks used upon sliding doors; a'd its objects are to provide a lock for such use in which the pull is automatically locked in its normal retracted position and is automatic ally thrown or thrust to its position of use by very slight pressure of the finger upon'the push-pin or locking-bolt on the key side and upon a corresponding push-pin on the strike side and in which the locking-bolt upon the lock side locks into the recess in the faceplate of the strike side, in which the push-pin upon that side normally 1 ies.,

With these ends in viewI have devised the novel construction, of which the following de` scription, taken in connection with the accom-l panying drawings, is a specification.

In locks of this character each of the doors of a pair of sliding doors is provided with a pull by which to operate it,the pull normally lying in a case in a mortise inthe door. this specification the part of the mechanism comprised within the case onthat side Which` is operated by the key to lock the doors together is designated asv the lock77 side, being shown at the righthandot' Figure 3, While the other side isdesignated the strike side, being shown at the left hand of Fig. 3.

In the accompanying drawings, comprising three sheets, the same reference-letters refer to the same or corresponding parts inthe severalviews. g i

In the drawings, Fig. l is a side elevation of the partson theukey side of the lock, the side plate or capot `the ease being removed and the relationfshown being-that taken when the parts are in normal positions. Fig. 2 is a similar View of the parts on the strike side,- the parts here also being in their normal positions. Fig. 3 is a side elevation of the two vsides of thelock, showing the parts in their relative positions whenthe looking-bolt is thrust to secure the doors together. Fig. 4 is a rear edge View` of the locking-bolt or push-pinnpon the lock side and its shank. Fig. 5 is a detail sectional View on the, line 5 5 ot' Fig. 3, and Fig. 6 is a perspective View off parts of the lock and release mechanism of the pulls. Figs- 7 and` 8 are side elevations showing the parts to release and operate the pull on the key side, Fig. 7 showing the relation of the parts when thc pull is retracted and Fig. 8 therelation when it is released. Figs. 9 and l0. are side elevations showing the parts to release and operate the pull on the strike side, Fig. 9 'showing the positions of the parts when the pull is in its normal retracted position and Fig. lO the positionjust at the moment of the release of the pull, the dotted lines showing the position when the pull is completely thrust. Fig. ll is a perspective of the release-lever on the strike side. Fig. 12 is a rear edge View of the operating-lever on the strike side, and Fig. 13 is a side elevation showing the operatinglever of the strikeside withdrawn to the position it occupies. when the, locking-bolt cngagejs its recess. It is understood,'of course, that Vin the several views 'showing elevations the cap of the case is removed'.

l The reference-letter A denotes a lock-case of ordinary construction, anda-its face-plate, the latter being providedfwith a circular recess ja and with a lower rectangular recess or opening ofor purposes hereinafter described.

Y Referring now especially to Figs. l, 4c, 5, 7, and 8,.which illustrate the construction ofthe lock side, or that side in which the keyisinserted, B denotes the locking bolt or' hook, which is curved or hooked in the usual manner, its shank b being formed atan acute angie to the bolt proper and pivoted upon a stud b', which projects from the lock-case near the face-plate, so that when the boltis thrown it will curve downwardlytoengage anzpening in the face-plate of the supplemental portion or strike side ofthe lock in such manner that the sliding doors will be securely locked together, as more fully hereinafter set forth. Studs b2 b3 project from the shank of the bolt upon opposite sides thereof, respectively, the

combined height of these studs being preferv ably equal to the inside thickness of the case to preserve the par-ts in position, thesest-uds having certain other mechanical functions, as will be more fully hereinafter pointed out. The free end of the shank is provided with an ear or projection b4,which serves as a bearing upon the inner side of the case when the. bolt is operated to preserve its alinement, this construction being clearly indicated in the detail View shown in Fig. 4. p

The reference-letter C denotes the carrier, which rests upon and is guided in its forward and backward movements by studs c c',tl;1at project from the lock-case in the usual man-Y ner, the stud c entering an elongated slot c2 in the carrier to preserve its alinement and` the carrier having two end lugs c4 to provide a space between the carrier and case `for 'the coiled spring c5, so that the latter will not interfere withvftheoperationof the carrier. This spring Surrounds the upper screw-post c6 of the-case, one end bearing against the top rimof the caseand theother being bent upwardly and hooked., as at c7, to engage over theedg-e of .the carrier C and the tumbler C. The forward end of the carrier is provided with a slot c?, that engages thestud b2 on the shank of the. bolt, this opening being somewhat greater in diameter `than the stud and enlarged at its' lower end, so that the bolt may have al slight inw-ard movement beyond its normal retract-V ed` position independently of the carrier, for a purpose that will be presently described.

The pull D consistsof the handp-iece d, of v usual form, and the .shank d', which is pref-` eralny a rectangularstrip of sheet metal having .a AT-shapeid' inner endor head anda notch or recess din its loweredge near its junction with the handpiece. The handle d normally lies, in the slot n.2 ofthe face-plate and is au tomatieali-yy thrown out to position to be grasped by the hand bysuitable mechanism, hereinafter described; The shank is of less. width than the handle and is secured toone edge thereof, its` rea-r end resting uponl and being held in proper alinement by a shelf or projtection d3, extending from the lock-case. Ajglride-shelf d4- alsoextends from the loc-kcase paralleland in proximity to the shelf d3 and is out .away or recessed at d5 to provide a guideway for the shank, the recess being of the width of the bodyof the shank, so that the Tlhead of theshank may not passthrou gh` it`buit Willahnton the shelf d4 to limit the' throw of the pull; A locking-plate @Z6 is arranged bctween the shelf d3 and the guide d4 f andis provid-edwith a recess dlin its upper faceiadapted to be'brought into register with the recessorguideway d5 ofthe shelf d, the lowerf-acesof these. recesses being-of approximately the same heig-ht'as the rest or shelir` d3, that. their three faces may bein line` tofprovide` afbearing forl the shank inl its movements. Theplate d6 is adaptedt'o-be sreciprocated up.; and down in its guideway between. the parte:` di and @Z4 by mechanism of the locking-bolt.

Vpresently to be described, and when the pull such that the lower lug d8 ofthe plate d6 is projected into the slot cl2 of. the shank to lock the pull in retracted position against the tension -of the spring di", which is suitablyarranged to exert a constant pressure to thrust the pull forward to its outer position. ferent positions are clearly indicated in Figs. l, 5, 6, and 8. In the last two figures the recess of the locking-plate d6 is shown as registering with thatof the guide d4 to allow the shank of the slide D to freely move back and forth, while in Figs. l and 5 the lug d8 of the locking-plate engages the recess of the shank.

the studb", the other er1-d 'taking against an' upwardlyjprojectin g ear orboss e3 on the lower end of the release-lever and tending to hold the sar-ne against its limit-slop e4, whereby the parts are returned to the position shown in Figs. 1 and 5. The vrelease-lever E is of irregular shape, as sho-wn in the dra-wings, being cur-ved slightly to the rear of the case below its pivot to engage the bifu-rca'ted 'or slotted Vend of the sliding loc-k plate de and' .slightly forward toward the face-plate at its.

upper end to enga-ge the studbsfon the shank It is provided near its upper end with a curved slot el', which` is struck on the arcV of la circle having the stud b as its. center and; which receives the stud b3 of the locking-bolt. The stud `normally rests at the end of the slot that isgt'owa-rd fthe center of the case, this end hav-inge slightlyoblique face to form a cam-surface 61, as"

shown in Fig. v7, and the relation'of parts is such that the locking-bolt may be projected or thrust outwardly to its lookin g position by the key operating on the carrier and tumbler in the usual mannerwithou-t in any wayA distur-hing .the release lever orl its associated parts, the lug-b3 then traversin-g the slot c of the leve-r, whileo-n the other hand the locking-bolt may be retractedsl-ightl'ybeyond its normal position to operate the release-lever of the pull by theaction of the stud h3 upon thev cam end of the slot e without in anywayv disturbing the carrier and its associ-ated lock mechanism, the lug b2 of the locking-bolt then movingin the slot cs, which, as before stated,l is large-r than the lug to permit the" movement of the lug rearwardly independently of the These parts and their relative dif-V ICO IZO

carrier.

, From a consideration of' the foregoing de scriptiomtaken in connection withthe illustration, it wil-l be apparent that,wi;th respect.

to the key side of the lock, the construction is such as to permit the lock to be operated without disturbing the pull and to permit the pull to be thrust Withoutdisturbingthe lock mechanism. The action of throwing and retracting the locking-bolt by the key being the same as is usual in this class of locks does not require explanation in detail. This operation does not inliuence the release mechanism of the pull, owing to the fact that the slot e of the lever E is struck on the arc of the circle in which the stud b3 of the locking-bolt travels'. On the other hand, when it is desired 'to'throw the pull on this side of the lock it is only necessary to press slightly on the face of the locking-bolt,which normally lies flush with the face-plate of its case, a beveled recess being provided in the faceplate for convenience of operation. When the bolt is in its normal position, the stud b3 rests against the top of the cam el of the slot d, as in Fig. 7, and a slight backward movement of the bolt under the pressure of the finger will cause the lug h3 to move over the cam of the release-lever E, andthereby rock it upon its pivot against the tension of its spring, and its lower end will push the locking-plate d6 downward until its lug (ZS moves out of the recess cl2 of the shank of the pull, when the spring d10 will cause the pull to move forward into its position of use, the T- head of the shank limiting its movement, as in Fig. S. As before stated, the stud b2 merely moves in the enlarged slot c2 of the carrier during this operation, not moving the carrier. It will be apparent that in this construction the part B performs the function of a locking-bolt and of a linger-piece or push-pin -to release the pull.

Referring now particularly to Figs. 2 and 9 to 13 of the drawings, it will be seen that the operative parts on the strike side are assembled in a lock-case similar to that already described and having a faceplate provided with a circular recess and elongated slot, as before. The construction of the pull D' and its associated parts, except the release-lever, is identical with that Vheretofore described, and hence it is not necessary to describe the same in detail, the same reference-letters indicating the same parts in each instance. The release-leverE forthe pull on the strike side is in the form of a slightly-curved plate having a perforated ear to pivot it upon its stud e, as clearly shown in Fig. 1l, the lever being connected to its associated lock-plate d6 in the same manner as previously described. The lever is provided with a slot e6 in its upper end, the upper portion of the slot being slightly irregular by reason of an inwardly-facing boss or cam e7, formed by an oblique portion es, leading outwardly from the slot and which has an upper cam end e9, as shown in Fig. 1l. The operatinglever B is preferably struck in the form shown in Figs. 9 and lO and is pivoted upon a suitable stud b', projecting from the lock-case near its faceplate, this stud also :forming the bearing for a suitable spring b5, one end of which may bear upon the face-plate of the case and the other against any suitable part of the lever-as, for example, the finger-piece hi--which projects through the recess a flush with the outer surface of the face-plate. The lever is provided with a stud b3 on its under face and with a projection or stud b2 upon its upper face, as shown in Fig. 12, the latter stud being adapted torest against the under side of the cap or cover to hold the former in its position within the vslot e6 of the releaselever E'. The stud b'normally lies in the oblique end e8 of the slot e6 of the release-lever E', and when pressure is exerted upon the finger-piece bG the action of the stud at the inception of its motion is to pass over the cam e', as clearly shown in Fig. 10, and cause the lever E to rock slightly rearwardly upon its pivot, thus retracting the lock-plate from engagement with the recess d2 of the shank of the pull and permitting the pull to be thrown by its spring to the. position shown by dotted lines in the manner before described. After the stud h3 has passed the projection e7 of the slot it may continue to traverse the slot without further affecting the lever E', the slot then being in the arc of the circle traversed by the stud. This latter effect permits the finger-piece and its operating-lever B. to be retracted far enough into its case to allow the locking-bolt B to engage the recess a in the face-plate of the strike side, in which the finger-piece h normally rests, thus securely locking the two doors together, as clearly shown in Fig. 3. The position of the parts on the strike side when the push-pin is forced backwardly upon its pivot to enable the locking-bolt to engage its recess is clearly shown in the View in Fig. 13, which indicates indetail the various positions assumed by the parts on the strike side at such time. It will be observed that the recesses d2 in the shanks of the pulls are slightly wider than the lockplates d, this construction being provided so that when the doors are locked together, as in Fig. 3, the pulls may be slight-ly forced IOO IIO

backwardly into their respective cases'when y they come in contact with each other upon the locking together of the two sides of the lock.

By the construction above described the parts of the lock are greatly improved and simplified, as it does away with the necessity ofA providingV an additional recess or keeper in the face-plate on the strikeside to receive the locking-bolt, the recess for the ngerpiece or push-pin of the pull-operating mechanism in this instance performing this additionalfunction. Theoperating-leverBis returned to its normal position after either its partial retraction to release the pull or its full retraction to permit the locking-bolt to en-` gage its recess by the spring h5, and in either case its stud b3, acting upon the cam end ffthe slot es of the lever E', causes this lever to revro sume its normal position and to dra-w its sliding lock-plate `d6 into the -slot cl2 of the shank of the pull. By employing a construction of this character the finger-pieces or push-pins for releasing the vpulls are made to perform the additional function of providing means to lockthe doors together, it being understood that'thelocking-bol't upon the key side is also a finger-piece or push-pin to release fitsassociated pullzand that the -inger-piece upon the strike side isi-an auxiliary or supplemental part of the locking means inv that its retraction permits the bolt to engage its recess.

f It is apparent that-on either side of the l'ock the pull is automatically locked when retracted to its normal position by the lockplate d, which takes into the slot d2 under the stress of its associated spring. On the other hand, each pull ifs-automatically shot Vor hthrown Vtoits position of use Vby its spring d10 when slight pressure is applied to its pushpin, only such pressure being required as isv necessary to rock the release-lever against the tension of itsspring e2 or b5, as the case may be, and the prolonged pressure Vnecessary when the ,pulls areprojected only by pressure on the finger-pieces is avoided.

Having thans described my invention, what I-claimas new, anddes-i re to secure by Letters Patent,.isl l. In a lock for slid-ing doors, a pair of pulls and aI pair of push-pins for the pulls, the

push-pin on one side being adapted tobeprojected into the recess ofthe other push-pin as a locking-bolt.

f2. In a lock for sliding doors, a pair of purl-ls and a push-pin for each pull, the pin on one side adapted to beretracted to two positions,

andthe pin on the other side adapted to Vbe retracted to one position and also to be pre'-A .yondits normal position, whereby the two sides may be locked together.

4:. In a sliding-door lock, a pair-of push-l pins and a pull controlled by each pin, lock mechanism adapted to throw the pin on the key side as a locking-bolt, and means on the strikeA side whereby the push-pin thereof may be forced back beyond its normal position by the locking-bolt.

` v5r. In .asliding-door lock, a pair of pulls and -a push-pin for each pull, means to project the pin on one side into-the recess of the pin on the other side, release mechanism intermedi-v ate each pin and its pull, and means whereby the pulls may be slightly retracted within their respective cases when the parts are locked together.

6.. In a sliding-door lock, a pull and a pushpifn therefor on the key side thereof, means i tooperate the .pin as a locking-bolt, in combination With a pull and a push-pin therefor on the strike side, controlling means for thev latter pull, a lever engaging the controlling means and vprovided with a' slot Ahaving ani oblique portion, and a stud on the pin normally resting in said oblique portion and adapted to move the lever in it-s passage therefrom.

Y 7. In a sliding-door lock, a pull and-a pushpin there-for on they key side thereof, means to operate thepin as a locking-bolt, in combination with a pull and a push-pin therefor on the strike side, control-ling means for the latter pull, a leve-r engaging the controllingy means and provided'with a slot having acam and a cam end, and a stud on the pin adapted to vmove theA lever i-n opposite direction `bycontact with said-cam or cam end respectively.

8. In a sliding-door lock, the combination of a spring-pressed pull having a notched shank, a reciprocating lock-plate having a lug normally engaging the notch of the shank, a l-'ever'engaging the plate, and a push-pin engaging the lever.

9. In a sliding-door lock, a spring-pull hav= ing a notched shank, a lock-plate sliding in a suitablegurideway andhavinga slotted eind, alever hav-ing an ear to engage the slotof '1 he pla-te, `and a push-pin for the lever.

10. In a slidingdoor lock, a lock-case provided withprojections on its inner face to form a guideway, a lock-plate adapted to slide in said guideway and having-a lockinglug, a spring-pull having a slotted shank to receive the lug, and mean-s tooperate theY plate. l

11. In a sliding-door lock,a spring-pull h'avin ga notched shank, a sliding lock-platehaving a lugtoin terlock with the slot of thesha-nk,

a spring forthe lock -plate, and means to operate the plate against the ten-sion of the spr-ing.

12. The ycombi-nation with a locking-bolt anda spring-pull, a carrier to operate the bolt, a lever to control the pull, connections providing lost motion between said bolt and carrier when the bolt is retracted as a pushpin,.and connections providingk iost motion between said bolt and l-ever when the bolt is operatedl by thecarrier.

13. The combination with the bolt and spring-pull of a sliding-door lock, of means tolocfk the pull in its retracted position, and a lever, one of whose arms engages the-locking means of the pull and the other engages the bolt, wherebypressure on the bolt when in its normal position releases thepull-locking means.

loo

IIO

'IZO

14. The combinationwith a' pivotedv lockv ing-bolt having a stud, and a carrier having a recess o-f greater diameter than said stud adapted to be engaged thereby, of a springpui-l, means to retain the pull in normal -position, and means actuated bythe bolt to release the pull, whereby the pull is thrown 'without affecting the carrier.-` e

15. The combination with a spring-pull and a pivoted bolt, of means to retain the pull, a release-lever actuated by the bolt, and a carrier loosely engaging the bolt, whereby the carrier throws and retract-s the bolt, but permits the bolt to move independently to operate the release-lever.

16. The combination with a pivoted bolt having a stud on each face of its shank, a carrier loosely engaging -one stud, and a lever loosely engaging the other stud, of a springpull, means to lock the pull in retracted position, but released by the lever, whereby the bolt is adapted to be operated by the carrier and to operate the looking means of the pull.

17. The combination with a pivoted bolt having a stud on each face of its shank, a carrier having a recess of greater diameter than said studs and engaging one of them, of a spring-pull having a notched shank, a sliding plate engaging said notch, and a lever, one of whose ends engages the sliding plate, the other being slotted to receive one of the studs of the shank.

18. The combination of a bolt having astud on each face of its pivoted shank, a carrier loosely engaging one stud, a spring-pull, re-

taining means for the pull, and a spring-lever for the retaining means, one end of said lever loosely engaging the second stud of the shank.

19. The combination with a spring-pull, release mechanism therefor,of a pnsh-pin adapted to operate the release mechanism at the beginning of its movement and then move independently thereof. if

20. The combination with aspring-pull, and apivoted pushpin,of means to retain the pull,

and a lever adapted to operate the retaining means only at the initial movement of the push-pin.

21. The combination withaspring-pulland a pivoted push-pin having a stud, means to retain the pull in retracted position, a lever connected at one end with said retaining means and having a slot at its other end to receive the stud, the slot being irregular at one end whereby the body of the slot is caused to assume a position in the line of the travel of the stud at its initial movement.

22. The combination of a pivoted push-pin having a stud, a lever having a slot to receive the stud and provided with a cam normally resting against the stud, a spring-pull, and' means to release the pull connected with said lever.

23. Thecombinati'on with a push-pin and a spring-pull, of a locking-plate engaging the pull when retracted, a spring therefor, and means operated by the pin upon'its return to normal position to cause the plate to engage the pull.

24. The combination of a spring-pull, a catch to retain the pull in its normal position, a lever controlling the catch and having a slot provided with alcam and a cam end, a spring push-pin having a stud adapted to contact with said cam when the pin is retracted and with said cam end when the pin is restored to its normal position.

25. The combination of a spring-pull, a push-pin to release the pull, and means whereby the push-pin may be moved beyond its releasing position to uncover its recess.

26. The combination with a lock-case having a recess in its face-plate and a pivoted push-pin normally lying in said recess, of a springt-pull adapted to be thrown at the initial movement of the pin, and means whereby the pin may be further retracted by pressure of a locking-bolt entering its recess.

In testimony whereof I affix my signature in the presence of two Witnesses.

' ALEXANDER CRAMOND.

Vitnesses:

M. J. GABRIEL, J. W. OLAUsoN. 

